Car-brake.



No. 830,155. PATENTED SEPT. 4, 1906.

P. M. KLING.

GAR BRAKE. APPLIOATION FILED SPT.30.1905.

UNITED STATES PATENT orrron.

CAR-BRAKE.

Specification of Letters Patent.

Patented Sept. 4, 1906.

Application filed September 30,1905. Serial No. 280,857-

To all whom it may concern:

Be it known that I, PETER M. KLING, a citizen of the United States,residing at Allegheny, county of Allegheny, in the State ofPennsylvania, have invented certain new and useful Improvements inCar-Brakes, of which the following is a specification.

My present invention relates to car-brakes, and has for its object toprovide a simple expedient whereby the objectionable slack in thebrake-chain extending from the brake chain or cable winding spindle orcrankshaft to the brake-beam 'or other applying medium may be largelydone away with. Heretofore in brake construction there has existedbetween the winding-spindle and the brakebeam a considerable degree ofslack in the brake chain or cable, which in many instances causes delayin the application of the brake.

In my present invention I do away with this objectionable featurewithout decreasing the working efficiency by. making the brake chain orcable of relative y short lengths and by interposing a subbrake chain orcable actuating mechanism between the brake chain or cable proper andthe crank-shaft or wind ing-spindle.

Such a mechanism is clearly described in the following specification andillustrated in the accompanying drawings, in which like referencecharacters refer to like parts, and in which- Figure 1 is a sectionalside elevation of a portion of a car structure supplied with my improvedbrake chain or cable subactuating means. Fig. 2 is a sectional plan viewof the brake chain or cable subactuating means. Fig. 3 is a sectionalside elevation of a modification in the form of guide for the pulleyblock of my brake chain or cable subactuating mechanism.

Referring now in detail to the drawings, 1 represents a car-body 2, acrank-shaft; 3, the brake chain or cable suitablyconnected to thebrake-beam or other shoe-app ying medium. (Not shown.) Heretofore incommon types of brake mechanism the brake chain or cable has extendedfrom, say, the brake-beam to the crank-shaft, the lower end of thecrank-shaft 2 forming a winding-spindle upon which chain or cable 3wound. In a construction made according to my present invention aninverted grooved rapidtake-up cone 4 is mounted on the lower end ofshaft 2, on the base or upper end of which is attached at 5 abrake-chain-subactuating cable 6, passing over pulley 7 in pulleyblock 8and secured at the other end through suitable connections to car-body 1.The block 8 is secured, by means of hook 8, to brake chain or cable 3.The pulley-block 8 is provided with eye-lugs 10, which travel on aninclined guide 11, secured to the car body 1.

In Fig. 3 is shown slight modifications in the form of guide for thepulley-block 8, wherein a guide 12 is pivotally secured at 13 tocar-body 1 and has at its other end eyelug 14, playing on a guide-pin15, secured to the car-body 1. Guide-pin 15 carries a spring 16, securedagainst displacement from pin 15 and bearing against the under side ofeye-lug 14 or other portions of guide 12.

The following is a brief description of the operation of my improvedbrake chain orcable subactuating mechanism.

The crank-shaft 2 being rotated cable 6 is wound upon the inverted cone4, it taking, say, approximately, two revolutions of the cone 4 to windcable 6 thereon, the balance of the winding being on the lower end ofshaft 2. The cable 6 being passed over pulley 7 and secured at 9 to theframe 1, it is obvious that pulley-block 8 must give way and travel downguideway 11 as the cable 6 shortens. The pulley-block 8 being secured tobrakechain 3 exerts a pull on said chain or cable 3, which in thewellknown manner applies the brake-shoes to the car-wheels, since byreason of the cone 4 winding cable 6 thereupon, the level of cable 6changes, throughout the winding operation, it is necessary that guide 11be inclined slightly toward the lower end of shaft 2 in order that cable6 will wind propshoes into engagement with the wheels, such meansconsisting in the rapid-take-up cone 4 on shaft 2. When the shoes arecontacting with the car-wheels and great pressure is needed, the cable 6is winding upon the lower end of shaft 2 of smaller diameter than cone4, which gives increased leverage, and hence force of application. Theinterposition of the block and tackle 0r egl'uiv'alent device betweencrank-shaft 2 an brake-chain 3 or other applying medium also increasesthe force of application one hundred per cent. Hence with theherein-described. apparatus the shoes are rapidly brought into brakingpositions and applied with great force.

Having thus described my invention, the following is what I claim asnew, and desire to secure by Letters Patent:

1. In brake mechanism, the combination with a controlling device and abrake-cable, of a traveling support for said cable, and a slanting guidefor said support.

2. In brake mechanism, the combination with a controlling device and abrake-cable, of a pulley-block secured to said brake-cable, a cablecarried by the pulley in said block secured at one end and winding atthe 0pposite end on said controlling device, and a slanting guide forsaid pulley-block.

rapid-take-up device at its other end, a pulley and block forming aconnection between the two cables, eye-lugs on said pulley-block, and aguide-bar passing through said eye ugs.

4:. In brake mechanism, the combination with a controlling device, abrake-cable, and a rapid-take-up device on said controlling device, of ablock-and-pulley connection between the rapid-take-up device and saidbrake-cable, and an automatically-adjustable guidewayupon which saidblock travels.

PETER M. KLING.

I/Vitnesses:

HARRY A. KNIGHT, HARRY E. KNIGHT.

